Effects of Anion and Solvent on Properties of Alternating Ethylene/CO Copolymer Catalyzed by the Pd(II) Complex

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Alternating copolymerization of ethylene and carbon monoxide was carried out using (dppp)Pd(OAc)(2)/ anion complexes (dppp = 1,3-bis(diphenylphosphino)propane) with various anions and solvents. Catalytic activity in a protic solvent (methanol) was found higher than that in an aprotic solvent (acetone). When p-toluenesulfonic acid (p-TSOH) was used as an anion, molecular weight and melting temperature as well as the catalytic activity, increased with an appropriate combination of methanol and acetone instead of each methanol or acetone. The type of anion and solvent seemed important for catalytic activity and polymer properties. Catalytic activity decreased due to steric hindrance of alcohol in the order, methanol>i-butanol>t-butanol. Polymer properties such as molecular weight, melting temperature and crystalline structure as well as catalytic activity were significantly affected by the presence of water.
Publisher
Nature Publishing Group
Issue Date
2001-01
Language
English
Article Type
Article
Keywords

CARBON-MONOXIDE; MOLECULAR-WEIGHT; OLEFINS; TERPOLYMERS

Citation

POLYMER JOURNAL, v.33, no.2, pp.133 - 138

ISSN
0032-3896
URI
http://hdl.handle.net/10203/79278
Appears in Collection
CBE-Journal Papers(저널논문)
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